Instructions

WEAR YOUR
FORESIGHT IS BETTER
THAN NO SIGHT
READ INSTRUCTIONS
BEFORE OPERATING
SAFETY GLASSES
SHERLINE PRODUCTS INC. • 3235 Executive Ridge • Vista • California 92081-8527 • FAX: [phone]
Toll Free Order Line: [phone] • International/Local/Tech. Assistance: [phone] • Internet: www.sherline.com
7/31/17
P/N 7600 tool post with P/N 2256
RH inserted carbide tip tool holder,
55° carbide tip and Torx wrench
Sherline has teamed up with Valenite
™
to bring the home
shop machinist into the space age with cutting tools that
add new dimension to small lathes. Until now, high speed
steel or brazed carbide tools were the only choices available
to the owner of miniature metal lathes. High speed steel
had short tool life while brazed carbide chipped easily.
Inserted carbide cutting tools have replaced these tools in
the modern machine shop. Now your miniature machine
shop can benet from these same features.
The proper carbide insert has the ability to consistently give
good nishes and long tool life at a much higher cutting
speed. This is especially important with small lathes because
they don’t have excessive power at low RPM. With inserted
carbide tools, you can cut stainless steel at the same RPM
you were formerly using to cut aluminum with high speed
steel tools without any sacrice of quality in surface nish.
Cost must be considered when selecting cutting tools,
because these carbide tools are not inexpensive. However,
they are worth every penny if you have problems grinding
your own high speed steel tools or cutting exotic materials
such as stainless steel.
If you would like a good, solid, easy-to-use holder for
these carbide tips, we suggest you start with the number
2256 right hand holder that uses the number 7605 insert
tip. This 55° insert is good for turning, facing and proling.
The inserts are oset 35° to either the right (2256) or left
(2257) and can be purchased as a pair (2258) which yields
a substantial cost savings.
The 55° inserts have the advantage of being able to cut
a larger number of dierent shapes. The 80° inserts are
slightly less versatile but oer the advantage of longer tool
life due to the stronger, more square shape.
Boring bars come in a standard 6-inch length and are
intended to be cut to length for each specic use. The 80°
boring bar is intended for boring straight holes, while the
55° tool can do certain types of inside diameter proling.
Remember there is a minimum hole diameter for I.D. boring
bars. (See tables on the following page.)
Sherline does not recommend attempting to cut hardened
steels or piano wire with these inserts. Materials such as
these should be ground to shape, not cut. However, abrasive
materials such as glass reinforced plastics can be easily cut
with these tools.
The main purpose of using a diamond insert is to true up
commutators used in electric motors. The most unique
aspect of this tool is that the diamond has four cutting
edges. Although the initial cost may seem high, when you
consider you are really getting four cutting surfaces rather
than one, the cost in relation to the usefulness of the tool is
quite reasonable. Diamonds, while expensive, are capable
of giving mirror-like nishes to copper or aluminum. Never
attempt to cut steel with the diamond cutter. (NOTE: Cutter
holder no longer available from Valenite as of 9/04)
Your present Sherline tool post may be modied to accept
these special tool holders, but an easier solution is Sherline’s
special tool post (P/N 7600) shown below. It is specially
designed to hold all the tools shown on this sheet.
PLEASE NOTE: The inserted carbide and diamond cutting
tools oered by Sherline will improve the performance of
the Sherline lathe, but they will not correct poor machining
technique. Rigid setups are a must for tools such as these.
3/8" Tool Post (P/N 7600)
Fits all 3/8" round, square insert holders
The Sherline 7600 tool post is specially
designed to t the larger 3/8" size tool
holders used for carbide or diamond inserted
tips. It is machined from solid aluminum
and has a black anodized nish for long life. In addition to
the slot for a 3/8" lathe cutting tool, a 3/8" diameter hole is
provided for holding round boring tools. Purchase of this
tool post will allow you to keep your standard P/N 4018
tool post available for use with 1/4" high speed steel tools
for jobs where they are sucient and/or a specially ground
and shaped tip is required.
3/8" Riser Tool Post (P/N 1289)
(Shown at left) Fits all 3/8" round and square
insert holders
The Sherline P/N 1289 riser tool post is
identical to the P/N 7600 tool post except it
is extended in length to be used when riser
blocks are installed on the lathe.
1/4"–3/8" Two-Position Tool Post (P/N 7603)
This tool post has slots on two opposite sides
to hold both 1/4" and 3/8" square shank
tools individually or at the same time. This
allows you to switch quickly between tools
of the two dierent sizes simply by rotating
the tool post 180°.
Thank you,
Sherline Products Inc.
Carbide Cutting Tool Inserts and Holders
P/N 7600